/lænd frʌnˈtɪr/ – Phrase
Definition: biên giới trên đất liền, biên giới trên bộ.
A more thorough explanation: A “land frontier” refers to a border or boundary between two countries or territories that is defined by land, as opposed to a maritime or aerial boundary. It is the physical area where one country’s territory ends and another country’s territory begins on land.
Example: The two countries agreed to establish a joint commission to address any disputes along their shared land frontier.